You are backpacking through Europe. You have 30 days until your flight home, but you have spent all
your travelling money. However, you have a 50-link gold chain that you bought on your travels and
have found a hotel that is willing to accept one link per night for payment of room and board. However,
the manager wants payment every day, and they are willing to help cut the links for you. The problem is
that they want one gold link in payment for every link they cut. How many links will you have when
you call home?